Sydney: According to reports by the South China Morning Post, North Korean leader Kim Jong Un's Hyon Song-wol was gunned down in front of her family just three days after being arrested for breaching North Korean pornography laws.
Hyon, was among a dozen well-known musicians who were executed by machine guns.
The dead members of the Unhasu Orchestra and the Wangjaesan Light Music Band were accused of filming themselves having sex and selling the tapes.
The Seoul-based Chosun Ilbo newspaper also revealed some allegedly had Bibles in their possession, although they were all treated as political dissidents.
Hyon - famous for propaganda songs including Footsteps of Soldiers, I Love Pyongyang and We are Troops of the Party - was a singer with the country's popular Pochonbo Electronic Ensemble.
"They were executed with machine guns while the key members of the Unhasu Orchestra, Wangjaesan Light Band and Moranbong Band as well as the families of the victims looked on," a source of the Chosun Ilbo newspaper said.
As per reports, the families of the executed have allegedly been sent to prison camps under the rogue country's guilt by association laws.
Kim and Hong dated until his despot dad Kim Jong-il ordered their relationship to end.
They were rumoured to be having an affair despite eventually marrying other people, with Kim's new wife Ri Sol-ju herself a former member of the Unhasu Orchestra.
"Kim Jong-un has been viciously eliminating anyone who he deems a challenge to his authority," a source told Chosun Ilbo, adding the executions "show that he is fixated on consolidating his leadership".